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MiniMax's[1] news post is dated 06.16.2025 and its technical report was submitted to arXiv[6] on June 16, 2025; Analytics Vidhya[3] (18 June) says M1 was released on day 1 of MiniMaxWeek and OpenRouter[4] lists minimax/minimax-m1 on 17 June (UTC).MiniMax releases M1, an open-weight 456B hybrid mixture-of-experts reasoning model with lightning attention, a 1M-token context and 80K-token reasoning output, trained with a new reinforcement-learning algorithm for a reported $534,700.
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